Moderate mag. 5.4 earthquake - Tonga on Saturday, 24 March 1990 at 17:20 (GMT)
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Moderate magnitude 5.4 earthquake at 30 km depth
Depth: 29.6 km
Epicenter latitude / longitude: 16.247°S / 173.058°W (Tonga)
Nearest volcano: Tafahi (83 km / 52 mi)
Nearby towns and cities:
85 km (53 mi) ESE of Hihifo (pop: 815) --> See nearby quakes!
285 km (177 mi) NNE of Neiafu (pop: 4,320) --> See nearby quakes!
290 km (180 mi) SSW of Mulifanua (Samoa) (pop: 4,510) --> See nearby quakes!
296 km (184 mi) SSW of Fasito‘outa (Samoa) (pop: 2,100) --> See nearby quakes!
302 km (188 mi) SSW of Apia (Samoa) (pop: 40,400) --> See nearby quakes!
307 km (191 mi) S of Asau (Samoa) (pop: 6,640) --> See nearby quakes!
329 km (204 mi) SW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
334 km (208 mi) SW of Pago Pago (Ma'Oputasi, American Samoa) (pop: 11,500) --> See nearby quakes!
420 km (261 mi) NNE of Pangai (pop: 1,740) --> See nearby quakes!
589 km (366 mi) NNE of Nuku'alofa (pop: 22,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.9 x 1012 joules (2.21 gigawatt hours, equivalent to 1898 tons of TNT or 0.1 atomic bombs!) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
|M 5.4||30 km||Tonga||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Aftershocks of the 5.4 quake Tonga 24 March 1990 17:20 GMT
More infoRecorded aftershocks, latest first (1 quakes):
- 28 Mar 1990 19:50 UTC| M 5.2 |33 km (20.5 mi) depth|18 km (11 mi) distance| USGS | Details